808391081 has 8 divisors (see below), whose sum is σ = 851258400. Its totient is φ = 765555840.

The previous prime is 808391027. The next prime is 808391131. The reversal of 808391081 is 180193808.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 808391081 - 2²² = 804196777 is a prime.

It is a super-2 number, since 2×808391081² = 1306992279680697122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (808391011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57530 + ... + 70188.

It is an arithmetic number, because the mean of its divisors is an integer number (106407300).

Almost surely, 2^808391081 is an apocalyptic number.

It is an amenable number.

808391081 is a deficient number, since it is larger than the sum of its proper divisors (42867319).

808391081 is a wasteful number, since it uses less digits than its factorization.

808391081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16039.

The product of its (nonzero) digits is 13824, while the sum is 38.

The square root of 808391081 is about 28432.2190657008. The cubic root of 808391081 is about 931.5521469549.

The spelling of 808391081 in words is "eight hundred eight million, three hundred ninety-one thousand, eighty-one".